Which expressión is equivalent to \( 5 / 6-3 / 6 \) ? \( \begin{array}{ll}\text { a. } 1 / 6+1 / 6 & \text { b. } 8 / 6-2.6\end{array} \)

First, let's simplify \( 5 / 6 - 3 / 6 \). When you subtract these two fractions with the same denominator, you subtract the numerators: \[ \frac{5 - 3}{6} = \frac{2}{6} \] Now, simplifying \( \frac{2}{6} \) gives us \( \frac{1}{3} \). To check the expression options, we can simplify the first expression \( 1/6 + 1/6 \); \[ \frac{1}{6} + \frac{1}{6} = \frac{2}{6} = \frac{1}{3} \] The second expression \( 8 / 6 - 2.6 \) is more complicated. First, converting \( 2.6 \) into a fraction gives us \( 2.6 = \frac{26}{10} = \frac{13}{5} \). Finding a common denominator with \( \frac{8}{6} \) is a bit tricky here, which may lead to complications. Thus, it turns out \( 1 / 6 + 1 / 6 \) is equivalent to \( 5 / 6 - 3 / 6 \).